OESF Portables Forum

Everything Else => Zaurus Distro Support and Discussion => Distros, Development, and Model Specific Forums => Archived Forums => Angstrom & OpenZaurus => Topic started by: amdonati on November 07, 2004, 04:59:52 pm

Title: FPU and non OE progs
Post by: amdonati on November 07, 2004, 04:59:52 pm

Hi,
I was wondering if the new fast FP settings in the new OZ can speed up also the programs not specifically compiled for OE and maybe using the compat libs (I was thinking of games like Crimson, exult but also for example the hancomm apps, Hancomm sheet and all spreadsheets should strongly benefit of it!).

I was also thinking of Pocket debian with X-qt.
Will it run at greater speed or not?

Thanks,

Adalberto

Title: FPU and non OE progs
Post by: zenyatta on November 07, 2004, 05:36:57 pm

I'm afraid you will get incorrect results from floating point calculations. There were some threads about this recently and it's reported quite consistently. Try searching for "ZUC" and you'll get the details.

z.

Title: FPU and non OE progs
Post by: Mickeyl on November 07, 2004, 06:26:03 pm

Exactly. To exploit the power of soft-float the toolchain and the glibc must play. Using the compat libs, neither does [since you're effectively using gcc 2.95.3 and glibc 2.x]

Title: FPU and non OE progs
Post by: amdonati on November 08, 2004, 12:06:15 am

Ok, fair enough.

And what about debian embedded?

X-Qt should be in the OE feed (if I ma not wrong), so are the debian embedded progs running faster/better or there is again no difference and the only way to have faster X progs is to use the GPE version of OZ?

Adalberto

Title: FPU and non OE progs
Post by: Mickeyl on November 08, 2004, 04:56:33 am

Everything that is compiled with a soft-float enabled toolchain runs faster. That is, only programs that run floating point instructions, of course.